Retort bag is a composite plastic film bag can be heated or boiling in the water or microwave, it has the advantages of both canning containers and boiling water-resistant plastic bags, therefore, also known as “soft canning”. After more than a decade of use proved that it is an ideal sales packaging containers. Steaming bag with more than three layers of material composite, a representative steaming bag structure is: the outer layer of polyester film, for strengthening; middle layer of aluminum foil, for light, moisture and air leakage; the inner layer of polyolefin film (such as polypropylene film), for heat sealing and contact with food. In food packaging, cooking bags and metal can containers and frozen food packaging bags, compared with many unique advantages:
1. Withstand Extreme Heat
- Retort bags are designed to handle high temperatures (up to 121–135°C) during retort sterilization.
- This allows for safe hot-filling or steam sterilization without damaging the pouch, ensuring food safety and shelf stability.
2. Alternative to Cans & Glass Jars
- They offer a lightweight, flexible alternative to traditional packaging like cans and jars.
- Lower shipping costs, reduced storage space, and less risk of breakage are big advantages.
3. Extended Shelf Life Without Refrigeration
- Retort processing kills bacteria, yeasts, and molds, allowing food to stay shelf-stable for up to 12–24 months without preservatives.
- Ideal for ready-to-eat meals, soups, curries, pet food, and military or camping rations.
4. Consumer Convenience
- Easy to open, heat, and consume directly from the pouch.
- Microwaveable versions enhance user-friendliness, making them perfect for on-the-go lifestyles.
5. Growing Demand for Ready Meals
- With busy urban lifestyles, there’s an increasing demand for ready-to-eat or heat-and-eat meals.
- Retort bags are perfect for this trend, especially in markets like Asia, Europe, and North America.
6. Durable, Puncture-Resistant & Leak-Proof
- Made from multiple high-barrier layers (PET/Alu/NY/CPP or PET/NY/RCPP), they provide excellent protection against oxygen, light, and moisture.
- Advanced materials make them tough enough for retort while keeping the contents safe.
7. Innovations in Recyclable Retort Pouches
- New developments are pushing mono-material retort bags, offering both recyclability and high performance, which adds environmental appeal.
Asia Packaging Group Retort bags are highly advanced packaging bags than the market, it is no leakage and could withstand the longtime steaming
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